More specs

app/models/user.rb

@@ -1,8 +1,9 @@
 class User < ActiveRecord::Base
   validates :email, immutable: true
+  validates :email, presence: true
 
   # Include default devise modules. Others available are:
-  # :token_authenticatable, :confirmable, :lockable and :timeoutable
+  # :token_authenticatable, :lockable and :timeoutable
   devise :confirmable, :database_authenticatable, :registerable,
          :recoverable, :rememberable, :trackable, :validatable
 

spec/models/user_spec.rb

@@ -1,6 +1,12 @@
 require 'spec_helper'
 
 describe User do
+  it { should have_db_index(:confirmation_token).unique(true) }
+  it { should have_db_index(:email).unique(true) }
+  it { should have_db_index(:reset_password_token).unique(true) }
+
+  it { should validate_presence_of :email }
+
   it 'should return login on User.login' do
     User.new(email: 'icesik@altlinux.org').login.should eq('icesik')
   end